JPH0618398Y2 - Electronic musical instrument with automatic playing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] This invention relates to an electronic musical instrument with an automatic playing device.

[Prior Art and Its Problems] When an electronic musical instrument with a conventional automatic performance device is used to automatically reproduce and play a melody and an accompaniment, the accompaniment mode switch, for example, Two switch operations were required: set to fingered or one-finger accompaniment mode state, and then turn on the playback switch.

In such a conventional electronic musical instrument with an automatic playing device, if the accompaniment mode switch is turned off and played back, only the melody is played, and the accompaniment data is not sounded even when read from the memory. In addition, in such a condition, if you try to play by pressing the keys as the performance operators in accordance with the playback song, the accompaniment range, that is, the lower range on the left side will be inactive. However, no sound was produced when the keys were pressed, and only the right melody range could be used for playing. For this reason, there is a drawback in that a key range that can be actually used is narrowed down in a playing performance.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an automatic performance device capable of effectively utilizing a performance operator in a reproduction performance based on recorded performance information. It is to provide an electronic musical instrument with.

[Points of the Invention] In order to achieve the above-mentioned object, the present invention uses all the performance operators for the melody in the reproduction performance state based on the recorded performance information depending on whether the performance information includes accompaniment information. The key is to decide whether or not.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

<Structure of Embodiment> FIG. 1 is an overall circuit diagram of an electronic musical instrument constructed by applying the present invention, in which 1 is a CP for controlling the entire circuit.
U, a switch unit 3, a keyboard unit 4, a waveform memory 5, a sequence memory 6, a working memory 7, a program memory 8, a musical sound creating unit 9 and an accompaniment sound creating unit 10 are connected to the CPU 1 via a bus line 2. It is connected.

In addition to the split mode switch 13, the upper switch 14, the lower switch 15 and the tone color selection switch 16 shown in FIG. 2, the switch section 3 includes a reproduction mode switch and an accompaniment mode switch (not shown). Includes all the switches that are basically necessary for the electronic musical instrument of, and particularly when the split mode switch 13, the upper switch 14 and the lower switch 15 are pressed, the LEDs 13 linked to them are included.
a, 14a, and 15a are turned on, and the turning off of the LED 13a corresponds to the normal mode. Further, the various modes set at the time of recording are flagged at the corresponding positions as shown in FIG. 3 in which a part of the contents of the working memory 7 is extracted, and are set as mode determination information at the time of playing. used.

The waveform memory 5 stores ten tone color data corresponding to each tone color selection switch 16 shown in FIG. 2, and one or two tone colors are selected by turning on the tone color selection switch 16. Will be.

The sequence memory 6 is composed of a melody memory 6a, a chord memory 6b, and a tone color memory 6c. The melody memory 6a, as shown in FIG. This includes on-off data stored in real time. In this example, the key C ₅ is first turned on, and then the key C _{6 is} turned on and the key G is turned on.
₅ ON, key C ₅ OFF, key C ₆ OFF, ... And time information T0, T4, T4, T0 ... Is included between the keys, and the code memory 6b is shown in FIG. As described above, the code data input at the time of recording is included, and in this example, C, C _m , G, G ₇ , F, F, F _m, ... Are read out in units of one bar. The tone color memory 6c stores the tone color selected by using the tone color selection switch 16 in the switch section 3 as 4-bit data, and is composed of 8 bits as shown in FIG.
In the normal mode, the upper 4 bits are used, and in the key split mode, the upper 4 bits are for the upper tone and the lower 4
Bits are used for the lower tones.

Referring again to FIG. 1, the musical tone creating unit 9 includes two musical tone producing circuits I and II, and the musical tone producing circuit I includes key codes for all keys in the normal mode and upper keys in the key split mode. The tone generator circuit II is used to process the key code for the lower key in the key split mode.

Now, in the automatic performance operation, the musical sound creating section 9 and the accompaniment sound creating section 10 are selectively driven based on the data contents stored in the sequence memory 6, and the melody sound data and the accompaniment sound reproduced by the musical sound creating section 9 are played. The accompaniment sound data reproduced by the creating unit 10 is supplied to the sound system 11,
From there, it is reported as a musical sound.

In addition, the key depression operation on the keyboard section 4 is detected by the CPU 1, and the CPU 1 causes the sequence memory 6 to operate.
The keyboard range of the keyboard section 4 is set based on the contents of
The performance data detected from the above are distributed and transferred to the musical sound creating section 9 and the accompaniment sound creating section 10, and the musical sound data created by each is emitted as a musical sound by the sound system 11.

The program memory 8 stores a program for the CPU 1 to control the entire circuit.

<Operation of Embodiment> Next, the operation of this embodiment will be described.

FIG. 7 is a main flow showing the operation of the circuit of FIG.
In step S1, U1 performs a switch scan on the switch unit 3, and then determines whether the switch has changed (step S2).

If there is a change in the switch in switch unit 3, YE
After performing the switch process in step S3 as S, the process proceeds to step S4, but if NO, step S3
Bypass and proceed to step S4, where the keyboard section 4
Key scanning is performed, and it is continuously determined whether or not there is a change in the key (step S5).

If there is no change in the key operation on the keyboard section 4,
If NO, the process returns to step S1, but if YES, the sounding process for the key pressed in step S6 is performed, and then the process returns to step S1.

FIG. 8 is a flowchart corresponding to the switch processing of step S3 in FIG. 7, and in particular, is a flowchart for explaining the operation when the reproduction mode switch is turned on.
In step M1, the memory address is initialized, that is, the melody memory 6a (FIG. 4) and the chord memory 6b (fifth memory) in the sequence memory 6 are initialized.
As shown in the figure), the memories are accessed (step M2), and the mode flag is determined (step M3).

The determination in step M3 is made by the mode flag (third flag) set at the time of recording and stored in the working memory 7.
Check the status of (Fig.) And branch according to the set mode.

If it is the normal mode as determined in step M3,
In step M4, the CPU 1 reads the key code C5 initially read from the melody memory 6a in step M2.
Is supplied to the tone generation circuit I in the tone generation section 9 and the process returns to step M2 to wait for the corresponding time (T0 in the example of FIG. 4) to access the melody memory 6a. This access process is repeated by repeating steps M3, M4 and M2.

Next, if the key split mode is set in the determination in step M3, the CPU 1 determines in step M5 whether the key code read from the melody memory 6a is equal to or larger than a predetermined key split point SP. And if it is equal or larger then YE
As S, the key code is supplied to the tone creating circuit I of the tone creating section 9 (step M6), and if it is smaller, as NO, the key code is provided to the tone creating circuit II of the tone creating section 9 (step M7). As before, the process returns to step M2, waits for a predetermined time, and the access to the melody memory 6a is repeated. That is, the content of the melody memory 6a is the key split point S in step M5.
The musical tone creating circuit I (step M6) distributes the musical tone data by using the upper tone color data shown in FIG. 6, and the musical tone creating circuit II (step M7).
Then, the tone data is created using the lower tone color.

If it is in the accompaniment mode as determined in step M3, C
In step M8, the PU1 determines whether the data read from the sequence memory 6 is a key code,
If the key code is YES, the key code is supplied to the tone generation circuit I in the tone generation section 9 (step M
9) If it is not a key code, the answer is NO and the chord data is supplied to the accompaniment sound creating section 10 (step M10).
After that, the process returns to step M2.

FIG. 9 is a flowchart showing the operation when a key is pressed during the automatic reproduction performance, which is step S6 in FIG.
Corresponds to some operations in. When a key operation is performed on the keyboard section 4, the CPU 1 determines in step W1 a mode flag (FIG. 3) in the working memory 7 set at the time of recording.
If the normal mode is checked, the key code corresponding to the pressed key is supplied to the tone creating circuit I in the tone creating section 9 (step W2), and the process ends.

If the key split mode is determined in step W1, the process proceeds to step W3, where the key code is assigned based on a predetermined key split point SP. That is, if the key code is equal to or greater than the predetermined key split point SP, YES is determined and the key code is supplied to the tone creating circuit I in the tone creating section 9 (step W4). When the answer is NO, the key code is supplied to the tone creating circuit II in the tone creating section 9 (step W5), and the process ends.

If it is determined in step W1 that the accompaniment mode is set, the CPU 1 proceeds to step W6 and determines whether or not there is accompaniment data.

If YES in the determination in step W6, step W
In 7, the key code is supplied to the tone creating circuit I in the tone creating section 9 to create tone data,
As a result, all the key codes specified by the keyboard section 4 are given to the musical tone creating circuit I in the musical tone creating section 9, so that the key depression on the keyboard section 4 is processed as an all-key melody key. .

If the determination in step W6 is NO, this is
Even though the accompaniment mode was set at the time of recording,
This corresponds to a state in which no accompaniment data is intentionally or accidentally entered. Therefore, in step W8, the CPU 1 determines whether the key code designated by the keyboard section 4 is equal to or larger than the originally determined key split point SP.

If YES in the determination in step W8, the key code is supplied from the melody key press corresponding to the key split point SP or higher, so that the key code is supplied to the tone creating circuit I in the tone creating section 9. If the determination in step W8 is NO, the key code is detected as from the accompaniment key range (step W9), and chord data representing the root note and type is supplied to the accompaniment sound creating section 10 to end. .

In this way, the range of the keyboard section 4 during playback accompaniment is
Depending on the presence / absence of accompaniment data that should have been recorded in the chord memory 6b at the time of recording, it is determined whether to use the all-key melody key range or a part of the lower key range as the accompaniment key range.

[Effect of the Invention] As described in detail above, in the reproduction performance state based on the recorded performance information, when the performance information includes accompaniment information, all of the plurality of performance operators are used for melody. Therefore, it is possible to effectively use the performance operator during playback performance.

[Brief description of drawings]

FIG. 1 is an overall circuit diagram of an electronic musical instrument constructed by applying the present invention, and FIG. 2 is a diagram showing main switches extracted.
FIG. 3 is a diagram showing the contents of the mode flag in the working memory, FIG. 4 is a diagram showing the data contents of the melody memory, and FIG. 5 is a diagram showing the data contents of the chord memory. , FIG. 6 is a diagram showing the data contents of the tone color memory, FIG. 7 is a diagram showing a flow chart of the main operation, and FIG. 8 is a flow chart of the operation when the reproduction switch is turned on. FIG. 9 and FIG. 9 are flowcharts showing the operation when a key is pressed during the automatic reproduction performance. 1 ... CPU, 3 ... switch section, 4 ... keyboard section, 5 ...
... Waveform memory, 6 ... Sequence memory, 7 ... Working memory, 9 ... Musical sound creation unit, 10 ... Accompaniment sound creation unit, 11 ... Sound system.

Claims (2)

[Scope of utility model registration request] 1. A plurality of performance operators, storage means for storing automatic performance information, reading means for reading the automatic performance information from the storage means, and automatic accompaniment for the automatic performance information read by the reading means. A determination means for determining whether or not the information is included, and a designation means for designating all of the plurality of performance operators as melody when the determination means determines that there is automatic accompaniment information. Electronic musical instrument with automatic playing device. 2. The utility model registration request, wherein the designating means includes a dividing means for dividing the plurality of performance operators into melody and accompaniment when the judging means judges that there is no automatic accompaniment information. An electronic musical instrument with an automatic performance device according to claim 1.